Management Processor Monitor: Monitor Recovery and
10009109-01 ATCA-9305 User’s Manual 9-5
Table 9-2: POST Diagnostic Results–Bit Assignments

Monitor SDRAM Usage

Monitor SDRAM usage is typically around 1 MB for monitor code and stack support. Please
note that the monitor stack grows downward from below where the monitor code resides
(in the upper 512 KB). The monitor C stack will typically not grow beyond 512 KB, therefore
the upper 1 MB of SDRAM is reserved for monitor use.
Note: The monitor has the ability to preserve (not overwrite) areas of memory defined by the pram environment
variable.
Caution: Any writes to these areas can cause unpredictable operation of the monitor.

MONITOR RECOVERY AND UPDATES

This section describes how to recover and/or update the monitor, given one or more of the
following conditions:
• If there is no console output, the monitor may be corrupted and need recovering (see
the “Recovering the Monitor” section).
• If the monitor still functions, but is not operating properly, then you may need to reset
the environment variables (see the “Resetting Environment Variables” section).
• If you are having Ethernet problems in the monitor, you may need to set the serial
number, since the MAC address is calculated from the serial number variable.
Bit: Diagnostic Test: Description: Value:
0 SDRAM Verify address and data lines are intact
0 Passed the test
1 Failure detected
1 Flash Verify size and initialization of soldered
flash
2I
2C Verify all local I2C devices are connected
to the I2C bus
3 Ethernet Switch Verify PCI communication with switch
4Reserved
5 PCIe Time-out PCIe enumeration skipped by user
6 DOC Embedded Flash
Drive (EFD)
Verify presence and ability to access
configuration space of DOC
7 Cavium 1 Presence Verify presence and ability to
communicate via PCI bus with Cavium 1
8 Cavium 2 Presence Verify presence and ability to
communicate via PCI bus with Cavium 2
9-31 Reserved
!